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发明名称
Improved drip return valve for beer or other pumps
摘要
申请公布号
GB382778(A)
申请公布日期
1932.11.03
申请号
GB19310032643
申请日期
1931.11.25
申请人
THOMAS HALL
发明人
分类号
B67D1/16
主分类号
B67D1/16
代理机构
代理人
主权项
地址
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